Can a signed PDF be edited?

If you received a PDF digitally signed by others, you can sign it, but can't edit it. While signing a PDF, if the signer chooses to lock the document after signing, the document becomes read-only for everyone, including the signer.

Can a digitally signed PDF be edited?

When you sign a PDF using your digital ID, the PDF becomes read-only for others. If you received a PDF digitally signed by others, you can sign it, but can't edit it. While signing a PDF, if the signer chooses to lock the document after signing, the document becomes read-only for everyone, including the signer.

How do I edit a PDF with a digital signature?

If you are the owner of the digital certificate used to sign the document and the document wasn't locked when signed, you can open the Signatures' pane at the left and right-click on the signature to clear it. After that, if the PDF document is a form, you can clear or edit its fields.

How do I unlock a signed PDF for editing?

1 Answer. If the signature in the form is yours, you can open the Signature pane on the left side, right-click on the signature and choose “Clear Signature”. This way the form will be unlocked. This is only possible if the person who tries to clear the signature has signed and locked the document.

Is it possible to tell if a PDF has been edited?

There is no sure proof way to determine if a generic PDF file is modified. If you go to the document properties (control or command d), if the proper metadata is available, it will list the creation date and time and modified date and time. This can help you determine if a PDF file has been modified since creation.

Can you redact a signed PDF?

You use the Redact tools to remove content. Choose Tools > Redact. On the Edit menu, choose To redact Text & Images. Select the text or image in a PDF, right-click, and select Redact.

How do I fix a digital signature in PDF?

5 Steps for Validating Digital Signatures In a PDF Open the digitally signed PDF that you need to validate using Power PDF. Locate the digital signature object within the document. Right click or command-click on the signature object. Select "Verify Signature" from the context menu.

How do I manage a digital signature in PDF?

In Acrobat, select the hamburger menu (Windows) or Acrobat menu (macOS) and then choose Preferences > Signatures. In Identities & Trusted Certificates, select More. Select Digital IDs on the left, then select the digital ID you want to use as the default.

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Last updated on Dec 31, 2025

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